<template>
     
<el-container class="home_container">
     <!-- 头部区域 -->

  <el-header>
      <div>
          <img src="../assets/jiaran.png" alt="">
          <span>电商管理系统</span>
      </div>
     <el-button type="info" @click="logout">退出</el-button>
  </el-header>

  <!-- 侧边栏 -->
  <el-container>
    <el-aside :width="isCollapse ?'64px':'200px' ">
        <div class="toggle-button" @click="toggleCollapce">|||</div>
        <el-menu 
        background-color="#333744" 
        text-color="#fff"  
        active-text-color="#409EFF" 
        unique-opened 
        :collapse="isCollapse" 
        :collapse-transition="false" 
        :router="true" 
        :default-active="activePath">
     <!-- 以及菜单 -->
      <el-submenu :index="item.id+ '' " v-for="item in menulist" :key="item.id">
              <!-- 一级菜单的模块区域 -->
        <template slot="title">
                <!-- 图标 -->
          <i :class="iconsObj[item.id]"></i>
                   <!-- 文本 -->
          <span>{{item.authName}}</span>
        </template>

      <!-- 二级菜单 -->
        <el-menu-item 
        :index="'/'+subItem.path"
         v-for="subItem in item.children" 
         :key="subItem.id"
          @click="saveNavState(subItem.path)"  
          :default-active="activePath">
             <template slot="title">
                <!-- 图标 -->
               <i class="el-icon-menu"></i>
                <!-- 文本 -->
                <span>{{subItem.authName}}</span>
            </template>
        </el-menu-item>

      </el-submenu>
    </el-menu>
    </el-aside>
    
    <!-- 右侧内容主体 -->
    <el-main>
        <router-view></router-view>
    </el-main>
  </el-container>
</el-container>

  
</template>

<script>
export default {
    name:'',
    data() {
        return {
            //左侧菜单数据
            menulist:[],
            iconsObj:{
                '125':'el-icon-user-solid',
                '103':'el-icon-coordinate',
                '101':'el-icon-s-goods',
                '102':'el-icon-document',
                '145':'el-icon-picture-outline'
            },
            //是否折叠
            isCollapse:false,
            //被激活的链接地址
            activePath:''
        }
    },
    created(){
        this.getMenuList(),
        this.activePath= window.sessionStorage.getItem('activePath')
    },
    methods:{
        //点击退出跳转回登陆页
        logout(){
            window.sessionStorage.clear();
            this.$router.push("/login")
        },
        //获取所以的菜单
        async getMenuList(){
            const {data:res} = await this.$http.get('menus')
            if(res.meta.status !==200) return this.$message.error(res.meta.msg)
            this.menulist = res.data
        },
        //点击按钮，折叠菜单
        toggleCollapce(){
            this.isCollapse = !this.isCollapse
        },
        //保存链接的激活状态
        saveNavState(activePath){
            window.sessionStorage.setItem('activePath',activePath)
            this.activePath=activePath
        }
    },
    
}
</script>

<style lang="less" scoped>
.el-header{
    background-color: #373d41;
    display: flex;
    justify-content: space-between;
    padding-left: 0;
    align-items: center;
    color: #fff;
    font-size: 20px;
    >div{
        display: flex;
        align-items: center;
        span{
            margin-left: 15px;
        }
    }
    img{
        height: 50px;
        width: 50px;
    }
}
.el-aside{
    background-color: #333744;
    .el-menu{
        border-right: none;
    }
}
.el-main{
     background-color: #eaedf1
}
.home_container{
    height: 100vh;
}
.toggle-button{
    background-color: #4A5064;
    font-size: 10px;
    text-align: center;
    color: #fff;
    line-height: 20px;
    letter-spacing: 0.2em;
    cursor: pointer;
}
</style>